Acqua of the Back has taken aim at Touma Kamijou-or more specifically, his right hand-with all the powers of sainthood and magic available to a powerful member of God's Right Seat. As a countermeasure, The Amakusa Style Church has dispatched Itsuwa as a temporary live in bodyguard. But when she whips out her overwhelming cooking ability and domestic skills, will Index completely lose her place in the Kamijou household before the threat passes?!